Shearwater Korea’s NetSuite Korea Localization: Electronic Tax Invoice (e-Tax Invoice)

by Yuni Shearwater

NetSuite is a leading cloud ERP natively built with robust global operational capabilities. While standard global features cover essential operations, localized processes are required to meet specific country-level requirements. Fortunately, despite being a cloud-based solution, NetSuite offers a highly flexible development environment using tools like SuiteScript, allowing businesses to seamlessly add tailor-made features optimized for local markets.

NetSuite also enables these custom-developed features to be packaged into complete, standalone applications. Functions that pass Oracle’s rigorous internal QA testing are listed on SuiteApp (www.SuiteApp.com), NetSuite’s official ecosystem. Through this platform, users worldwide can search for and implement the verified features they need. As of October 2026, Shearwater Korea’s e-Tax Invoice application is officially registered on SuiteApp, adapted to meet the specific requirements of Korean businesses.

Key Features of Shearwater Korea’s e-Tax Invoice

Shearwater Korea’s e-Tax Invoice solution supports both NetSuite Legacy Tax and SuiteTax, offers a bilingual user interface (Korean and English), and includes management capabilities for sub-branch office locations.

The core capabilities provided by Shearwater Korea’s e-Tax Invoice solution include:

1. Issuance of Sales e-Tax Invoices

Through custom fields added by the e-Tax Invoice module, users can manage fundamental tax invoice information, such as business registration numbers, sub-branch codes, business categories, and line of business. Users can issue e-Tax Invoices directly from NetSuite Invoices and Credit Memos. Tax codes allow for the seamless issuance of taxable, tax-exempt, and zero-rated tax invoices.

  • e-Tax Invoice Issuance (Taxable, Tax-Exempt, Zero-Rated)
    • Automatically sends e-tax invoice emails to customers via an integrated API provider upon issuance in NetSuite.
    • Supports adding attachments during tax invoice issuance.
    • Stores National Tax Service (NTS) approval numbers directly on the corresponding NetSuite Invoices and Credit Memos.
    • Supports up to two customer contact emails (with an option to send separate notification emails to additional contacts).
  • Cancellation of Tax Invoices: Tax invoices that have not yet been transmitted to the National Tax Service (NTS) can be canceled.
  • Modified Tax Invoices: For tax invoices already transmitted to the NTS, modified tax invoices (amended tax invoices) can be issued.
  • Monthly Aggregated Tax Invoices (Optional Add-on): When NetSuite’s Invoice Grouping feature is enabled, multiple invoices can be grouped together to issue a single monthly aggregated tax invoice based on the invoice group.

2. Tax Invoice Aggregation & Reconciliation

In addition to tax invoices issued directly through NetSuite, Shearwater Korea’s e-Tax Invoice module allows users to look up all sales and purchase tax invoices registered with the NTS—including those issued directly via the NTS portal or third-party APIs. It also facilitates reconciliation between sales/purchase tax invoices and NetSuite Invoices or Vendor Bills.

3. Business Registration Number Validation

Supports real-time validation checks for Korean business registration numbers within NetSuite upon request/configuration.

About Shearwater Korea

Shearwater Korea is the Korean subsidiary of Shearwater Asia. As Oracle NetSuite’s most experienced partner in South Korea, we provide end-to-end services including NetSuite licensing, implementation, custom development, and ongoing maintenance.

If you have any inquiries, please leave a message on our official website: https://shearwaterkorea.com/